<!--
    ScadaBR - Open Source M2M - http://mango.serotoninsoftware.com
    Copyright (C) 2006-2009 Serotonin Software Technologies Inc.
    @author Matthew Lohbihler
    
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see http://www.gnu.org/licenses/.
 -->
<!--<h1>Overview</h1>-->
<!--<p>This data source is used to collect generic information from the-->
<!--web sites available on the internet, or internal equipment available on-->
<!--an intranet. Using mechanisms similar to a web browser, the data source-->
<!--requests information from HTTP-enabled devices, and then uses Regular-->
<!--Expressions to extract the desired information. This is a polling data-->
<!--source.</p>-->
<h1>Descri&ccedil;&atilde;o</h1>
<p>Este data source &eacute; usado para coletar
informa&ccedil;&otilde;es gen&eacute;ricas de web sites
dispon&iacute;veis na internet, ou de equipamentos internos
dispon&iacute;veis na intranet. Usando mecanismos similares a um web
browser, o data source requisita informa&ccedil;&otilde;es de
dispositivos <i>HTTP-enabled</i>, e ent&atilde;o utiliza
Express&otilde;es Regulares para extrair a informa&ccedil;&atilde;o
desejada. Trata-se de um <i>polling data source</i>.</p>

<!--<h1>Configuration</h1>-->
<!--<p>Every data source requires a <b>Name</b>, which can be any-->
<!--description. The <b>Update period</b> determines how often the HTTP-->
<!--request is made. The <b>URL</b> is the address of the page that is to be-->
<!--parsed. Use the <img src="images/bullet_go.png" /> icon to test the-->
<!--URL. (Opens in a new window or browser tab.)</p>-->
<h1>Configura&ccedil;&atilde;o</h1>
<p>Todo data source requer um <b>Nome</b>, o qual pode ser qualquer
descri&ccedil;&atilde;o. O <b>Per&iacute;odo de
atualiza&ccedil;&atilde;o</b> determina com que frequ&ecirc;ncia a
requisi&ccedil;&atilde;o HTTP ser&aacute; realizada. A <b>URL</b>
&eacute; o endere&ccedil;o da p&aacute;gina que ser&aacute; analisada.
Use o &iacute;cone <img src="images/bullet_go.png" /> para testar a
URL. Abre em uma nova janela ou aba do browser.)</p>

<!--<p>The <b>Timeout</b> and <b>Retry</b> fields determine how long to-->
<!--wait for the web server to return the page, and how many times to retry-->
<!--the connection in the event of failures. If all of the retries are-->
<!--exhausted, a data source exception event is raised.</p>-->
<p>Os campos <b>Timeout</b> e <b>Retry</b> determinam quanto tempo o
data source esperar&aacute; que o servidor web retorne a p&aacute;gina,
e quantas vezes ir&aacute; tentar novamente a conex&atilde;o em eventos
de falhas. Se todas as tentativas forem esgotadas, um evento de
exce&ccedil;&atilde;o do data source ser&aacute; disparado.</p>